Kestrel Instruments Blog

  1. How Heat Stress Is Managed at the Boston Marathon—And How to Check Race Day Conditions for Free

    How Heat Stress Is Managed at the Boston Marathon—And How to Check Race Day Conditions for Free The Boston Marathon is known for its challenging course and unpredictable spring weather. From cool starts to warmer midday conditions, race day can shift quickly, making heat stress monitoring a critical part of athlete safety. Understanding Race Day Heat Conditions Air temperature is only one part of the equation. During endurance events like... Read more...
  2. The 2026 Dicamba Label Changed What You Have to Record. Here's What That Means at the Nozzle.

    The 2026 Dicamba Label Changed What You Have to Record. Here's What That Means at the Nozzle. EPA approved new over-the-top dicamba registrations for the 2026 and 2027 growing seasons - Engenia, Tavium, and Bayer's dicamba product (XtendiMax's replacement, now labeled Stryax) -and called them the most restrictive dicamba labels in the agency's history. Most of the attention has gone to the new buffer distances and temperature cutoffs. The ... Read more...
  3. WBGT Monitoring for Mississippi Athletic Programs: New Policy Focuses on WBGT for Heat Stress Prevention

    WBGT Monitoring for Mississippi Athletic Programs: New Policy Focuses on WBGT for Heat Stress Prevention As an athletic trainer, you know that managing heat stress during outdoor practices and competitions is one of your most critical responsibilities. Many coaches and athletic trainers understand that air temperature alone tells only part of the story. That's where Wet Bulb Globe Temperature (WBGT) comes in, and why it's now the gold standard for ... Read more...
  4. The UIL WBGT Activity Chart Explained

    The UIL WBGT Activity Chart Explained What Each Flag Level Means for Football, Band, Cross Country, and Every Other Outdoor Program Quick answer: The UIL uses five WBGT flag levels — Green, Yellow, Orange, Red, and Black — each with specific practice duration limits, rest break requirements, and equipment restrictions. Thresholds differ by class: Class 2 schools (West ... Read more...
  5. UIL Heat Stress Compliance Checklist

    UIL Heat Stress Compliance Checklist Everything Texas Athletic Programs Must Have in Place Before August 1, 2026 Who this is for: Athletic directors, head coaches, athletic trainers, and band directors at any Texas UIL member school conducting outdoor athletic or marching band activities. If you have athletes outside in August, this checklist applies to your... Read more...
  6. UIL WBGT Class 2 vs. Class 3

    UIL WBGT Class 2 vs. Class 3 Which Applies to Your Texas School - and Why It Changes Everything About Your August Practices Quick answer: Texas UIL schools are divided into two WBGT classes based on campus location. Class 2 (West Texas and the Panhandle) begins required activity modifications at WBGT ≥ 79.7°F. Class 3 (Central, East, and South Texas) begins... Read more...
  7. Heat Stress and Weather Terms Glossary

    Heat Stress and Weather Terms Glossary Heat safety involves a specific vocabulary that mixes meteorology and occupational health - terms like WBGT, heat index, dew point, heat advisory, and heat dome all describe different things and shouldn't be used interchangeably. WBGT measures actual heat stress on the body using temperature, humidity, radiant heat, and wind; heat index estimates ... Read more...
  8. The World's Biggest Soccer Tournament Has a Heat Problem - and We're Measuring It in Real Time

    The World's Biggest Soccer Tournament Has a Heat Problem - and We're Measuring It in Real Time The 2026 FIFA World Cup kicked off this week to enormous fanfare - and an immediate reminder that summer soccer in North America comes at a cost. On opening day in Texas, more than 100 fans were treated for heat-related illness at a fan festival before a single whistle had blown.[1] Weather warnings blanketed the opening weekend,[2] with Dallas ... Read more...
  9. National Usage of Wet Bulb Globe Temperature in Athletics

    National Usage of Wet Bulb Globe Temperature in Athletics A brief guide to wet bulb globe temperature and complete list of every state and their stance on its usage in place of heat index for heatstroke prevention in athletes. On July 31st, 2001, in Mankato, Minnesota, heat sweltered around a group of Vikings Football players as they conducted their preseason trainings. One athlete, in particular, ... Read more...
  10. OSHA's Heat NEP Is Back — And It Has Teeth: What Employers Must Know for 2026

    OSHA's Heat NEP Is Back — And It Has Teeth: What Employers Must Know for 2026 Effective April 10, 2026 | Directive CPL 03-00-024 OSHA's National Emphasis Program (NEP) on heat-related hazards was fully revised and relaunched on April 10, 2026, replacing the original 2022 directive for a new five-year enforcement term. This isn't a paperwork update - it expands which industries are targeted, raises documentation expectations... Read more...

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